Seiko Cal. 4490 - 646

This Solar model from 1972 features a 40mm Two-Tone case. Powered by the 4490 caliber with 30j jewels beating at 36,000 bph, it delivers a 65 hours power reserve. [seikata-wm-ef86a9bb9e45]

Also known as: Sumo, Bullhead

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

40mm

Case Thickness

10.7mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Navy

Jewels

30j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1972

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